This high performance bib holder (bib clasp) features a unique design that makes it easy to put on and take off the bib, as well as the basic performance of the bib, reducing skin chafing and improving customization by printing. The back part uses a round shape that reduces contact with the skin and holds the bib more firmly and is also compatible with harsh races such as Ultra Marathons and Trail Runs. BIB-IT. is also widely used in marathons, as well as for cycling and table tennis, and other competition that require biking (it is not suitable for thick and non-elastic materials). This product is designed to be worn tightly with race wear. As a result, you may feel stiff when removing it at the first time. If you are concerned about the hardness, you may have to remove the button several times before putting it on to the wearer. If you still feel hard, please file the pin part of the top part with a file, and adjust it to your desired firmness.